./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fc0d7108b14cf7ade4256acdb7ea5c36ccda70628af318ac7331527caf0f1ef8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:32:12,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:32:12,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:32:12,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:32:12,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:32:12,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:32:12,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:32:12,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:32:12,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:32:12,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:32:12,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:32:12,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:32:12,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:32:12,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:32:12,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:32:12,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:32:12,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:32:12,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:32:12,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:32:12,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:32:12,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:32:12,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:32:12,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:32:12,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:32:12,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:32:12,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:32:12,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:32:12,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:32:12,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:32:12,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:32:12,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:32:12,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:32:12,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:32:12,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:32:12,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:32:12,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:32:12,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:32:12,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:32:12,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:32:12,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:32:12,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:32:12,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:32:12,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:32:12,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:32:12,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:32:12,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:32:12,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:32:12,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:32:12,396 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:32:12,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:32:12,404 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:32:12,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:32:12,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:32:12,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:32:12,407 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:32:12,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:32:12,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:32:12,408 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:32:12,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:32:12,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:32:12,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:32:12,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:32:12,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:32:12,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:32:12,411 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:32:12,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:32:12,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:32:12,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:32:12,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:32:12,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:32:12,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:12,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:32:12,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:32:12,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:32:12,416 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:32:12,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:32:12,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:32:12,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:32:12,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:32:12,417 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc0d7108b14cf7ade4256acdb7ea5c36ccda70628af318ac7331527caf0f1ef8 [2021-11-13 02:32:12,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:32:12,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:32:12,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:32:12,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:32:12,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:32:12,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i [2021-11-13 02:32:12,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/68240d3f9/c74b2857defa43d89a52629f2d02455d/FLAG0bdbeff49 [2021-11-13 02:32:14,001 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:32:14,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i [2021-11-13 02:32:14,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/68240d3f9/c74b2857defa43d89a52629f2d02455d/FLAG0bdbeff49 [2021-11-13 02:32:14,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/68240d3f9/c74b2857defa43d89a52629f2d02455d [2021-11-13 02:32:14,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:32:14,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:32:14,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:14,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:32:14,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:32:14,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:14" (1/1) ... [2021-11-13 02:32:14,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300692b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:14, skipping insertion in model container [2021-11-13 02:32:14,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:14" (1/1) ... [2021-11-13 02:32:14,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:32:14,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:15,156 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:15,258 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:15,449 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:15,813 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:15,814 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:15,885 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:15,908 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:15,914 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,207 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,207 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,513 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,529 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,531 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,584 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,584 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,586 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,595 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,596 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,597 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,599 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,730 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,737 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,780 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,811 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,843 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,854 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,854 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,854 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,871 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,881 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,885 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,886 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:32:16,918 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i[329752,329765] [2021-11-13 02:32:17,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:17,138 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 02:32:17,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54e206a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:17, skipping insertion in model container [2021-11-13 02:32:17,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:17,139 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:32:17,142 INFO L158 Benchmark]: Toolchain (without parser) took 2832.49ms. Allocated memory was 98.6MB in the beginning and 163.6MB in the end (delta: 65.0MB). Free memory was 61.5MB in the beginning and 90.3MB in the end (delta: -28.8MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2021-11-13 02:32:17,143 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:32:17,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2828.96ms. Allocated memory was 98.6MB in the beginning and 163.6MB in the end (delta: 65.0MB). Free memory was 61.3MB in the beginning and 90.3MB in the end (delta: -29.0MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2021-11-13 02:32:17,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2828.96ms. Allocated memory was 98.6MB in the beginning and 163.6MB in the end (delta: 65.0MB). Free memory was 61.3MB in the beginning and 90.3MB in the end (delta: -29.0MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3561]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fc0d7108b14cf7ade4256acdb7ea5c36ccda70628af318ac7331527caf0f1ef8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:32:19,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:32:19,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:32:19,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:32:19,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:32:19,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:32:19,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:32:19,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:32:19,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:32:19,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:32:19,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:32:19,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:32:19,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:32:19,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:32:19,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:32:19,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:32:19,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:32:19,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:32:19,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:32:19,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:32:19,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:32:19,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:32:19,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:32:19,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:32:19,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:32:19,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:32:19,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:32:19,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:32:19,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:32:19,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:32:19,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:32:19,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:32:19,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:32:19,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:32:19,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:32:19,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:32:19,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:32:19,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:32:19,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:32:19,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:32:19,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:32:19,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:32:19,406 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:32:19,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:32:19,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:32:19,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:32:19,408 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:32:19,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:32:19,408 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:32:19,409 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:32:19,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:32:19,409 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:32:19,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:32:19,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:32:19,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:32:19,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:32:19,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:32:19,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:32:19,412 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:32:19,413 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:32:19,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:32:19,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:32:19,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:32:19,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:32:19,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:32:19,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:32:19,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:19,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:32:19,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:32:19,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:32:19,415 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:32:19,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:32:19,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:32:19,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:32:19,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:32:19,416 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc0d7108b14cf7ade4256acdb7ea5c36ccda70628af318ac7331527caf0f1ef8 [2021-11-13 02:32:19,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:32:19,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:32:19,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:32:19,835 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:32:19,835 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:32:19,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i [2021-11-13 02:32:19,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/d184d6866/7d0047af6d32483a900f7d1cf2dc445b/FLAG10baf9a37 [2021-11-13 02:32:20,913 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:32:20,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i [2021-11-13 02:32:20,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/d184d6866/7d0047af6d32483a900f7d1cf2dc445b/FLAG10baf9a37 [2021-11-13 02:32:21,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/data/d184d6866/7d0047af6d32483a900f7d1cf2dc445b [2021-11-13 02:32:21,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:32:21,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:32:21,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:21,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:32:21,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:32:21,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:21" (1/1) ... [2021-11-13 02:32:21,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320141cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:21, skipping insertion in model container [2021-11-13 02:32:21,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:32:21" (1/1) ... [2021-11-13 02:32:21,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:32:21,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:23,878 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i[329752,329765] [2021-11-13 02:32:24,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:24,129 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:32:24,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:32:24,692 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i[329752,329765] [2021-11-13 02:32:24,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:24,752 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:32:25,168 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i[329752,329765] [2021-11-13 02:32:25,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:32:25,455 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:32:25,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25 WrapperNode [2021-11-13 02:32:25,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:32:25,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:25,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:32:25,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:32:25,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:25,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:25,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:32:25,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:32:25,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:32:25,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:32:25,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:25,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:26,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:26,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:26,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:26,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:26,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:26,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:32:26,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:32:26,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:32:26,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:32:26,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (1/1) ... [2021-11-13 02:32:26,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:32:26,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:32:26,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:32:26,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:32:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-13 02:32:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-13 02:32:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_heartbeat_init_uv [2021-11-13 02:32:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_heartbeat_init_uv [2021-11-13 02:32:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-13 02:32:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-13 02:32:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_partition_disengaged [2021-11-13 02:32:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_partition_disengaged [2021-11-13 02:32:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-13 02:32:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-13 02:32:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:32:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:32:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_partitions_uv [2021-11-13 02:32:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_partitions_uv [2021-11-13 02:32:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_offline_heartbeat_uv [2021-11-13 02:32:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_offline_heartbeat_uv [2021-11-13 02:32:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_release_gru_mq_irq_uv [2021-11-13 02:32:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_release_gru_mq_irq_uv [2021-11-13 02:32:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_die_deactivate [2021-11-13 02:32:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_die_deactivate [2021-11-13 02:32:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_connect [2021-11-13 02:32:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_connect [2021-11-13 02:32:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 02:32:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 02:32:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_die_notifier [2021-11-13 02:32:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_die_notifier [2021-11-13 02:32:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cached_activate_gru_mq_desc_mutex_of_xpc_partition_uv [2021-11-13 02:32:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cached_activate_gru_mq_desc_mutex_of_xpc_partition_uv [2021-11-13 02:32:26,568 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kthread_start [2021-11-13 02:32:26,568 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kthread_start [2021-11-13 02:32:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_part_ref [2021-11-13 02:32:26,569 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_part_ref [2021-11-13 02:32:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_create_kthreads [2021-11-13 02:32:26,569 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_create_kthreads [2021-11-13 02:32:26,569 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_local_activate_IRQ_uv [2021-11-13 02:32:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_local_activate_IRQ_uv [2021-11-13 02:32:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_SHORT~TO~C_INT [2021-11-13 02:32:26,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_SHORT~TO~C_INT [2021-11-13 02:32:26,570 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 02:32:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 02:32:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_put_fifo_entry_uv [2021-11-13 02:32:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_put_fifo_entry_uv [2021-11-13 02:32:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure uv_blade_to_pnode [2021-11-13 02:32:26,571 INFO L138 BoogieDeclarations]: Found implementation of procedure uv_blade_to_pnode [2021-11-13 02:32:26,571 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_uv [2021-11-13 02:32:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_uv [2021-11-13 02:32:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cached_activate_gru_mq_desc_mutex_of_xpc_partition_uv [2021-11-13 02:32:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cached_activate_gru_mq_desc_mutex_of_xpc_partition_uv [2021-11-13 02:32:26,572 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_openclose_chctl_flags [2021-11-13 02:32:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_openclose_chctl_flags [2021-11-13 02:32:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_ULONG [2021-11-13 02:32:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_ULONG [2021-11-13 02:32:26,574 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-13 02:32:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 02:32:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 02:32:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_connect_channel [2021-11-13 02:32:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_connect_channel [2021-11-13 02:32:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_cache_remote_gru_mq_desc_uv [2021-11-13 02:32:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_cache_remote_gru_mq_desc_uv [2021-11-13 02:32:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_ch_structures_uv [2021-11-13 02:32:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_ch_structures_uv [2021-11-13 02:32:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:32:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_activating [2021-11-13 02:32:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_activating [2021-11-13 02:32:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disconnect_callout [2021-11-13 02:32:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disconnect_callout [2021-11-13 02:32:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_deactivate_partition [2021-11-13 02:32:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_deactivate_partition [2021-11-13 02:32:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 02:32:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:32:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:32:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:32:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-13 02:32:26,579 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-13 02:32:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 02:32:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 02:32:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_channel_mgr [2021-11-13 02:32:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_channel_mgr [2021-11-13 02:32:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_save_remote_msgqueue_pa_uv [2021-11-13 02:32:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_save_remote_msgqueue_pa_uv [2021-11-13 02:32:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_openrequest_uv [2021-11-13 02:32:26,580 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_openrequest_uv [2021-11-13 02:32:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_heartbeat_exit_uv [2021-11-13 02:32:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_heartbeat_exit_uv [2021-11-13 02:32:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_ch_structures [2021-11-13 02:32:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_ch_structures [2021-11-13 02:32:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 02:32:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 02:32:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_any_partition_engaged_uv [2021-11-13 02:32:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_any_partition_engaged_uv [2021-11-13 02:32:26,582 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-13 02:32:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-13 02:32:26,583 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 02:32:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 02:32:26,584 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_request_partition_reactivation_uv [2021-11-13 02:32:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_request_partition_reactivation_uv [2021-11-13 02:32:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~X~C_ULONG~X~C_ULONG~TO~C_INT [2021-11-13 02:32:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~X~C_ULONG~X~C_ULONG~TO~C_INT [2021-11-13 02:32:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_SHORT~TO~VOID [2021-11-13 02:32:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_SHORT~TO~VOID [2021-11-13 02:32:26,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~X~C_ULONG~TO~C_INT [2021-11-13 02:32:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~X~C_ULONG~TO~C_INT [2021-11-13 02:32:26,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 02:32:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 02:32:26,586 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2021-11-13 02:32:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2021-11-13 02:32:26,586 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_part_deref [2021-11-13 02:32:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_part_deref [2021-11-13 02:32:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_closerequest_uv [2021-11-13 02:32:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_closerequest_uv [2021-11-13 02:32:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disallow_all_hbs_uv [2021-11-13 02:32:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disallow_all_hbs_uv [2021-11-13 02:32:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_init_mq_node [2021-11-13 02:32:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_init_mq_node [2021-11-13 02:32:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_destroy_gru_mq_uv [2021-11-13 02:32:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_destroy_gru_mq_uv [2021-11-13 02:32:26,591 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_increment_heartbeat_uv [2021-11-13 02:32:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_increment_heartbeat_uv [2021-11-13 02:32:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure put_online_cpus [2021-11-13 02:32:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure put_online_cpus [2021-11-13 02:32:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_sent_chctl_flags [2021-11-13 02:32:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_sent_chctl_flags [2021-11-13 02:32:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_remote_heartbeat_uv [2021-11-13 02:32:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_remote_heartbeat_uv [2021-11-13 02:32:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_xpc_registration [2021-11-13 02:32:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_xpc_registration [2021-11-13 02:32:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disallow_hb_uv [2021-11-13 02:32:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disallow_hb_uv [2021-11-13 02:32:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:32:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_openreply_uv [2021-11-13 02:32:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_openreply_uv [2021-11-13 02:32:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_hb_checker [2021-11-13 02:32:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_hb_checker [2021-11-13 02:32:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-11-13 02:32:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-11-13 02:32:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-13 02:32:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-13 02:32:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_ch_structures_uv [2021-11-13 02:32:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_ch_structures_uv [2021-11-13 02:32:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_rsvd_page_uv [2021-11-13 02:32:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_rsvd_page_uv [2021-11-13 02:32:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_gru_mq_watchlist_free_uv [2021-11-13 02:32:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_gru_mq_watchlist_free_uv [2021-11-13 02:32:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-11-13 02:32:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-11-13 02:32:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:32:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 02:32:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:32:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:32:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:32:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:32:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:32:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_sysctl_table [2021-11-13 02:32:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_sysctl_table [2021-11-13 02:32:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 02:32:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 02:32:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:32:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-13 02:32:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-13 02:32:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:32:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:32:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_assume_partition_disengaged_uv [2021-11-13 02:32:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_assume_partition_disengaged_uv [2021-11-13 02:32:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 02:32:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 02:32:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_msg_structures_uv [2021-11-13 02:32:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_msg_structures_uv [2021-11-13 02:32:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:32:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-13 02:32:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:32:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_allow_hb_uv [2021-11-13 02:32:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_allow_hb_uv [2021-11-13 02:32:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_partitions_uv [2021-11-13 02:32:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_partitions_uv [2021-11-13 02:32:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kthread_waitmsgs [2021-11-13 02:32:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kthread_waitmsgs [2021-11-13 02:32:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:32:26,607 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_opencomplete_uv [2021-11-13 02:32:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_opencomplete_uv [2021-11-13 02:32:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:32:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:32:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:32:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_msg_structures_uv [2021-11-13 02:32:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_msg_structures_uv [2021-11-13 02:32:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_rsvd_page [2021-11-13 02:32:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_rsvd_page [2021-11-13 02:32:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_wakeup_channel_mgr [2021-11-13 02:32:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_wakeup_channel_mgr [2021-11-13 02:32:26,610 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 02:32:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 02:32:26,611 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_return [2021-11-13 02:32:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_return [2021-11-13 02:32:26,611 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kmalloc_cacheline_aligned [2021-11-13 02:32:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kmalloc_cacheline_aligned [2021-11-13 02:32:26,611 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-13 02:32:26,611 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_notify_sender_uv [2021-11-13 02:32:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_notify_sender_uv [2021-11-13 02:32:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2021-11-13 02:32:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2021-11-13 02:32:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_check_remote_hb [2021-11-13 02:32:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_check_remote_hb [2021-11-13 02:32:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 02:32:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 02:32:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 02:32:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 02:32:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_init_fifo_uv [2021-11-13 02:32:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_init_fifo_uv [2021-11-13 02:32:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_msgqueue_ref [2021-11-13 02:32:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_msgqueue_ref [2021-11-13 02:32:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_received_payload_uv [2021-11-13 02:32:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_received_payload_uv [2021-11-13 02:32:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 02:32:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 02:32:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-11-13 02:32:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-11-13 02:32:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 02:32:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 02:32:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_exit_uv [2021-11-13 02:32:26,614 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_exit_uv [2021-11-13 02:32:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_activate_IRQ_rcvd_uv [2021-11-13 02:32:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_activate_IRQ_rcvd_uv [2021-11-13 02:32:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_payload_uv [2021-11-13 02:32:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_payload_uv [2021-11-13 02:32:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_free_msg_slot_uv [2021-11-13 02:32:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_free_msg_slot_uv [2021-11-13 02:32:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:32:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_indicate_partition_engaged_uv [2021-11-13 02:32:26,616 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_indicate_partition_engaged_uv [2021-11-13 02:32:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:32:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_msg_chctl_flags_uv [2021-11-13 02:32:26,616 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_msg_chctl_flags_uv [2021-11-13 02:32:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 02:32:26,616 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 02:32:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_msgqueue_deref [2021-11-13 02:32:26,617 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_msgqueue_deref [2021-11-13 02:32:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_closereply_uv [2021-11-13 02:32:26,617 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_closereply_uv [2021-11-13 02:32:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-13 02:32:26,617 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-13 02:32:26,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:32:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:32:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:32:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:32:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_request_partition_activation_uv [2021-11-13 02:32:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_request_partition_activation_uv [2021-11-13 02:32:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:32:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_indicate_partition_disengaged_uv [2021-11-13 02:32:26,622 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_indicate_partition_disengaged_uv [2021-11-13 02:32:26,623 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disconnect_channel [2021-11-13 02:32:26,623 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disconnect_channel [2021-11-13 02:32:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 02:32:26,624 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 02:32:26,624 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 02:32:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 02:32:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-11-13 02:32:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-11-13 02:32:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~C_INT [2021-11-13 02:32:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~C_INT [2021-11-13 02:32:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_rsvd_page_pa [2021-11-13 02:32:26,625 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_rsvd_page_pa [2021-11-13 02:32:26,625 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_activate_partition [2021-11-13 02:32:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_activate_partition [2021-11-13 02:32:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_part_uv [2021-11-13 02:32:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_part_uv [2021-11-13 02:32:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure uv_cpu_to_blade_id [2021-11-13 02:32:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure uv_cpu_to_blade_id [2021-11-13 02:32:26,626 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_activate_kthreads [2021-11-13 02:32:26,626 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_activate_kthreads [2021-11-13 02:32:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_partition_engaged_uv [2021-11-13 02:32:26,627 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_partition_engaged_uv [2021-11-13 02:32:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-13 02:32:26,627 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-13 02:32:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_gru_msg [2021-11-13 02:32:26,627 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_gru_msg [2021-11-13 02:32:26,627 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_create_gru_mq_uv [2021-11-13 02:32:26,627 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_create_gru_mq_uv [2021-11-13 02:32:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:32:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:32:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_of_node [2021-11-13 02:32:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_of_node [2021-11-13 02:32:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_partition_rsvd_page_pa_uv [2021-11-13 02:32:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_partition_rsvd_page_pa_uv [2021-11-13 02:32:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 02:32:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 02:32:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_ch_uv [2021-11-13 02:32:26,629 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_ch_uv [2021-11-13 02:32:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:32:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:32:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:32:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:32:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 02:32:26,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 02:32:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_partitions [2021-11-13 02:32:26,630 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_partitions [2021-11-13 02:32:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_disconnect [2021-11-13 02:32:26,630 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_disconnect [2021-11-13 02:32:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_do_exit [2021-11-13 02:32:26,630 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_do_exit [2021-11-13 02:32:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_online_heartbeat_uv [2021-11-13 02:32:26,631 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_online_heartbeat_uv [2021-11-13 02:32:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_fifo_entry_uv [2021-11-13 02:32:26,631 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_fifo_entry_uv [2021-11-13 02:32:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-11-13 02:32:26,631 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-11-13 02:32:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-13 02:32:26,631 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-13 02:32:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_request_partition_deactivation_uv [2021-11-13 02:32:26,632 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_request_partition_deactivation_uv [2021-11-13 02:32:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_chctl_all_flags_uv [2021-11-13 02:32:26,632 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_chctl_all_flags_uv [2021-11-13 02:32:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_partition_going_down [2021-11-13 02:32:26,632 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_partition_going_down [2021-11-13 02:32:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-13 02:32:26,632 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-13 02:32:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-13 02:32:26,633 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-13 02:32:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 02:32:26,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 02:32:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure uv_gpa [2021-11-13 02:32:26,633 INFO L138 BoogieDeclarations]: Found implementation of procedure uv_gpa [2021-11-13 02:32:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 02:32:26,633 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 02:32:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~C_SHORT~X~C_INT~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 02:32:26,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~C_SHORT~X~C_INT~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 02:32:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_deliverable_payload_uv [2021-11-13 02:32:26,634 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_deliverable_payload_uv [2021-11-13 02:32:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_notify_senders_of_disconnect_uv [2021-11-13 02:32:26,634 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_notify_senders_of_disconnect_uv [2021-11-13 02:32:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-13 02:32:26,635 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-13 02:32:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_make_first_contact_uv [2021-11-13 02:32:26,635 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_make_first_contact_uv [2021-11-13 02:32:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_n_of_deliverable_payloads_uv [2021-11-13 02:32:26,635 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_n_of_deliverable_payloads_uv [2021-11-13 02:32:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-13 02:32:26,635 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-13 02:32:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-13 02:32:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-13 02:32:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure is_uv_system [2021-11-13 02:32:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure is_uv_system [2021-11-13 02:32:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 02:32:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 02:32:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 02:32:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 02:32:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_cancel_partition_deactivation_request_uv [2021-11-13 02:32:26,637 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_cancel_partition_deactivation_request_uv [2021-11-13 02:33:54,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:33:54,992 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:33:55,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:33:55 BoogieIcfgContainer [2021-11-13 02:33:55,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:33:55,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:33:55,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:33:55,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:33:55,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:32:21" (1/3) ... [2021-11-13 02:33:55,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585131ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:33:55, skipping insertion in model container [2021-11-13 02:33:55,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:32:25" (2/3) ... [2021-11-13 02:33:55,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585131ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:33:55, skipping insertion in model container [2021-11-13 02:33:55,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:33:55" (3/3) ... [2021-11-13 02:33:55,013 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--misc--sgi-xp--xpc.ko-main.cil.out.i [2021-11-13 02:33:55,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:33:55,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:33:55,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:33:55,110 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:33:55,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:33:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 2720 states, 1846 states have (on average 1.3699891657638137) internal successors, (2529), 1947 states have internal predecessors, (2529), 716 states have call successors, (716), 156 states have call predecessors, (716), 156 states have return successors, (716), 684 states have call predecessors, (716), 716 states have call successors, (716) [2021-11-13 02:33:55,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 02:33:55,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:33:55,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:33:55,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:33:55,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:33:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1052280664, now seen corresponding path program 1 times [2021-11-13 02:33:55,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:33:55,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484302898] [2021-11-13 02:33:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:55,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:33:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:33:55,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:33:55,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:34:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 3236 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:34:15,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:15,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:15,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484302898] [2021-11-13 02:34:15,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484302898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:15,773 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:15,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:34:15,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576504640] [2021-11-13 02:34:15,777 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:15,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:34:15,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:34:15,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:15,832 INFO L87 Difference]: Start difference. First operand has 2720 states, 1846 states have (on average 1.3699891657638137) internal successors, (2529), 1947 states have internal predecessors, (2529), 716 states have call successors, (716), 156 states have call predecessors, (716), 156 states have return successors, (716), 684 states have call predecessors, (716), 716 states have call successors, (716) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:34:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:18,987 INFO L93 Difference]: Finished difference Result 7795 states and 11609 transitions. [2021-11-13 02:34:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:34:18,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 02:34:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:19,094 INFO L225 Difference]: With dead ends: 7795 [2021-11-13 02:34:19,094 INFO L226 Difference]: Without dead ends: 5054 [2021-11-13 02:34:19,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:19,157 INFO L933 BasicCegarLoop]: 5241 mSDtfsCounter, 3348 mSDsluCounter, 3697 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2347.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3348 SdHoareTripleChecker+Valid, 8938 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2580.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:19,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3348 Valid, 8938 Invalid, 251 Unknown, 0 Unchecked, 62.21ms Time], IncrementalHoareTripleChecker [2 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 2580.38ms Time] [2021-11-13 02:34:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2021-11-13 02:34:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 5036. [2021-11-13 02:34:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 3400 states have (on average 1.349705882352941) internal successors, (4589), 3589 states have internal predecessors, (4589), 1328 states have call successors, (1328), 308 states have call predecessors, (1328), 307 states have return successors, (1319), 1254 states have call predecessors, (1319), 1319 states have call successors, (1319) [2021-11-13 02:34:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 7236 transitions. [2021-11-13 02:34:19,773 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 7236 transitions. Word has length 20 [2021-11-13 02:34:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:19,774 INFO L470 AbstractCegarLoop]: Abstraction has 5036 states and 7236 transitions. [2021-11-13 02:34:19,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:34:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 7236 transitions. [2021-11-13 02:34:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 02:34:19,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:19,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:34:19,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:20,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:20,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:34:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash -444187920, now seen corresponding path program 1 times [2021-11-13 02:34:20,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:20,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516321871] [2021-11-13 02:34:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:20,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:20,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:20,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:20,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:34:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:39,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:34:39,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:40,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:40,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:40,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516321871] [2021-11-13 02:34:40,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516321871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:40,719 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:40,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:34:40,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629722463] [2021-11-13 02:34:40,719 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:40,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:34:40,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:34:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:40,723 INFO L87 Difference]: Start difference. First operand 5036 states and 7236 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:34:43,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:34:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:44,077 INFO L93 Difference]: Finished difference Result 5176 states and 7378 transitions. [2021-11-13 02:34:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:34:44,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-11-13 02:34:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:44,146 INFO L225 Difference]: With dead ends: 5176 [2021-11-13 02:34:44,146 INFO L226 Difference]: Without dead ends: 5172 [2021-11-13 02:34:44,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:44,157 INFO L933 BasicCegarLoop]: 3962 mSDtfsCounter, 3839 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2837.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3839 SdHoareTripleChecker+Valid, 4093 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3054.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:44,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3839 Valid, 4093 Invalid, 8 Unknown, 0 Unchecked, 19.77ms Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 3054.57ms Time] [2021-11-13 02:34:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2021-11-13 02:34:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 5170. [2021-11-13 02:34:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5170 states, 3500 states have (on average 1.3434285714285714) internal successors, (4702), 3687 states have internal predecessors, (4702), 1338 states have call successors, (1338), 332 states have call predecessors, (1338), 331 states have return successors, (1331), 1266 states have call predecessors, (1331), 1331 states have call successors, (1331) [2021-11-13 02:34:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 7371 transitions. [2021-11-13 02:34:44,570 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 7371 transitions. Word has length 24 [2021-11-13 02:34:44,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:44,571 INFO L470 AbstractCegarLoop]: Abstraction has 5170 states and 7371 transitions. [2021-11-13 02:34:44,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:34:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 7371 transitions. [2021-11-13 02:34:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 02:34:44,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:44,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:34:44,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:44,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:44,791 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:34:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash -886279904, now seen corresponding path program 1 times [2021-11-13 02:34:44,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:44,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212445504] [2021-11-13 02:34:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:44,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:44,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:44,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:44,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:35:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:03,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 3146 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:03,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:04,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:04,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:04,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212445504] [2021-11-13 02:35:04,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212445504] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:04,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:04,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:35:04,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440591928] [2021-11-13 02:35:04,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:04,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:04,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:04,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:04,306 INFO L87 Difference]: Start difference. First operand 5170 states and 7371 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:35:07,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:35:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:07,789 INFO L93 Difference]: Finished difference Result 5172 states and 7372 transitions. [2021-11-13 02:35:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:07,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-11-13 02:35:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:07,843 INFO L225 Difference]: With dead ends: 5172 [2021-11-13 02:35:07,843 INFO L226 Difference]: Without dead ends: 5169 [2021-11-13 02:35:07,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:07,856 INFO L933 BasicCegarLoop]: 3921 mSDtfsCounter, 3900 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3011.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3900 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3185.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:07,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3900 Valid, 3921 Invalid, 2 Unknown, 0 Unchecked, 16.58ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 3185.48ms Time] [2021-11-13 02:35:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2021-11-13 02:35:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 5169. [2021-11-13 02:35:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 3500 states have (on average 1.3431428571428572) internal successors, (4701), 3686 states have internal predecessors, (4701), 1337 states have call successors, (1337), 332 states have call predecessors, (1337), 331 states have return successors, (1331), 1266 states have call predecessors, (1331), 1331 states have call successors, (1331) [2021-11-13 02:35:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 7369 transitions. [2021-11-13 02:35:08,322 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 7369 transitions. Word has length 25 [2021-11-13 02:35:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:08,323 INFO L470 AbstractCegarLoop]: Abstraction has 5169 states and 7369 transitions. [2021-11-13 02:35:08,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:35:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 7369 transitions. [2021-11-13 02:35:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-13 02:35:08,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:08,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:08,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:08,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:08,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1706224653, now seen corresponding path program 1 times [2021-11-13 02:35:08,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:08,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455737168] [2021-11-13 02:35:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:08,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:08,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:08,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:08,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:35:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:27,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:27,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:27,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:27,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:27,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455737168] [2021-11-13 02:35:27,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455737168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:27,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:27,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:35:27,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332856900] [2021-11-13 02:35:27,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:27,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:27,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:27,940 INFO L87 Difference]: Start difference. First operand 5169 states and 7369 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:35:30,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:35:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:31,096 INFO L93 Difference]: Finished difference Result 5171 states and 7370 transitions. [2021-11-13 02:35:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-13 02:35:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:31,141 INFO L225 Difference]: With dead ends: 5171 [2021-11-13 02:35:31,142 INFO L226 Difference]: Without dead ends: 5168 [2021-11-13 02:35:31,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:31,149 INFO L933 BasicCegarLoop]: 3919 mSDtfsCounter, 3897 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2745.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2904.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:31,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3897 Valid, 3919 Invalid, 2 Unknown, 0 Unchecked, 13.84ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2904.48ms Time] [2021-11-13 02:35:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2021-11-13 02:35:31,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 5168. [2021-11-13 02:35:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 3500 states have (on average 1.3428571428571427) internal successors, (4700), 3685 states have internal predecessors, (4700), 1336 states have call successors, (1336), 332 states have call predecessors, (1336), 331 states have return successors, (1331), 1266 states have call predecessors, (1331), 1331 states have call successors, (1331) [2021-11-13 02:35:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 7367 transitions. [2021-11-13 02:35:31,524 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 7367 transitions. Word has length 26 [2021-11-13 02:35:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:31,525 INFO L470 AbstractCegarLoop]: Abstraction has 5168 states and 7367 transitions. [2021-11-13 02:35:31,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:35:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 7367 transitions. [2021-11-13 02:35:31,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 02:35:31,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:31,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:31,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:31,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:31,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1354703229, now seen corresponding path program 1 times [2021-11-13 02:35:31,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:31,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052218830] [2021-11-13 02:35:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:31,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:31,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:31,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:31,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:35:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:49,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 3148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:49,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:49,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:49,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:49,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052218830] [2021-11-13 02:35:49,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052218830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:49,770 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:49,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:35:49,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925482994] [2021-11-13 02:35:49,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:49,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:49,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:49,773 INFO L87 Difference]: Start difference. First operand 5168 states and 7367 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:35:52,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:35:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:53,004 INFO L93 Difference]: Finished difference Result 5170 states and 7368 transitions. [2021-11-13 02:35:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:53,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-13 02:35:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:53,075 INFO L225 Difference]: With dead ends: 5170 [2021-11-13 02:35:53,075 INFO L226 Difference]: Without dead ends: 5167 [2021-11-13 02:35:53,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:53,082 INFO L933 BasicCegarLoop]: 3917 mSDtfsCounter, 3894 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2803.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3894 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2957.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:53,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3894 Valid, 3917 Invalid, 2 Unknown, 0 Unchecked, 13.70ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2957.45ms Time] [2021-11-13 02:35:53,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2021-11-13 02:35:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 5167. [2021-11-13 02:35:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 3500 states have (on average 1.3425714285714285) internal successors, (4699), 3684 states have internal predecessors, (4699), 1335 states have call successors, (1335), 332 states have call predecessors, (1335), 331 states have return successors, (1331), 1266 states have call predecessors, (1331), 1331 states have call successors, (1331) [2021-11-13 02:35:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 7365 transitions. [2021-11-13 02:35:53,519 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 7365 transitions. Word has length 27 [2021-11-13 02:35:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:53,520 INFO L470 AbstractCegarLoop]: Abstraction has 5167 states and 7365 transitions. [2021-11-13 02:35:53,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:35:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 7365 transitions. [2021-11-13 02:35:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 02:35:53,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:53,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:53,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:53,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:53,724 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash 952531190, now seen corresponding path program 1 times [2021-11-13 02:35:53,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:53,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247027810] [2021-11-13 02:35:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:53,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:53,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:53,734 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:53,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:36:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:10,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 3149 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:36:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:10,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:10,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:10,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247027810] [2021-11-13 02:36:10,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247027810] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:10,978 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:10,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:36:10,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705050336] [2021-11-13 02:36:10,978 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:10,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:36:10,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:36:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:36:10,980 INFO L87 Difference]: Start difference. First operand 5167 states and 7365 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:36:13,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:36:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:14,548 INFO L93 Difference]: Finished difference Result 15453 states and 22211 transitions. [2021-11-13 02:36:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:36:14,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-11-13 02:36:14,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:14,634 INFO L225 Difference]: With dead ends: 15453 [2021-11-13 02:36:14,634 INFO L226 Difference]: Without dead ends: 10282 [2021-11-13 02:36:14,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:36:14,682 INFO L933 BasicCegarLoop]: 4780 mSDtfsCounter, 3908 mSDsluCounter, 3901 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2731.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3908 SdHoareTripleChecker+Valid, 8681 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.48ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2922.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:14,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3908 Valid, 8681 Invalid, 12 Unknown, 0 Unchecked, 28.48ms Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2922.56ms Time] [2021-11-13 02:36:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10282 states. [2021-11-13 02:36:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10282 to 10269. [2021-11-13 02:36:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10269 states, 6962 states have (on average 1.343292157426027) internal successors, (9352), 7331 states have internal predecessors, (9352), 2646 states have call successors, (2646), 662 states have call predecessors, (2646), 660 states have return successors, (2726), 2507 states have call predecessors, (2726), 2636 states have call successors, (2726) [2021-11-13 02:36:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10269 states to 10269 states and 14724 transitions. [2021-11-13 02:36:15,538 INFO L78 Accepts]: Start accepts. Automaton has 10269 states and 14724 transitions. Word has length 28 [2021-11-13 02:36:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:15,540 INFO L470 AbstractCegarLoop]: Abstraction has 10269 states and 14724 transitions. [2021-11-13 02:36:15,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:36:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 10269 states and 14724 transitions. [2021-11-13 02:36:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 02:36:15,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:15,555 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:15,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:15,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:15,771 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:36:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1192167519, now seen corresponding path program 1 times [2021-11-13 02:36:15,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:15,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583357987] [2021-11-13 02:36:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:15,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:15,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:15,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:15,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:36:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:35,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 3342 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:36:35,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:36,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:36:36,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:36,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583357987] [2021-11-13 02:36:36,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583357987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:36:36,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:36:36,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:36:36,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569341483] [2021-11-13 02:36:36,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:36,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:36:36,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:36:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:36:36,844 INFO L87 Difference]: Start difference. First operand 10269 states and 14724 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:36:39,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:36:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:42,350 INFO L93 Difference]: Finished difference Result 21542 states and 31092 transitions. [2021-11-13 02:36:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:36:42,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2021-11-13 02:36:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:42,435 INFO L225 Difference]: With dead ends: 21542 [2021-11-13 02:36:42,436 INFO L226 Difference]: Without dead ends: 11238 [2021-11-13 02:36:42,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:36:42,524 INFO L933 BasicCegarLoop]: 4513 mSDtfsCounter, 546 mSDsluCounter, 22448 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4033.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 26961 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.23ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4287.41ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:42,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 26961 Invalid, 190 Unknown, 0 Unchecked, 58.23ms Time], IncrementalHoareTripleChecker [20 Valid, 169 Invalid, 1 Unknown, 0 Unchecked, 4287.41ms Time] [2021-11-13 02:36:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11238 states. [2021-11-13 02:36:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 10251. [2021-11-13 02:36:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10251 states, 6948 states have (on average 1.3422567645365573) internal successors, (9326), 7318 states have internal predecessors, (9326), 2642 states have call successors, (2642), 662 states have call predecessors, (2642), 660 states have return successors, (2718), 2497 states have call predecessors, (2718), 2628 states have call successors, (2718) [2021-11-13 02:36:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10251 states to 10251 states and 14686 transitions. [2021-11-13 02:36:43,400 INFO L78 Accepts]: Start accepts. Automaton has 10251 states and 14686 transitions. Word has length 62 [2021-11-13 02:36:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:43,401 INFO L470 AbstractCegarLoop]: Abstraction has 10251 states and 14686 transitions. [2021-11-13 02:36:43,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:36:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 10251 states and 14686 transitions. [2021-11-13 02:36:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 02:36:43,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:43,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:36:43,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:43,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:43,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:36:43,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash 849198691, now seen corresponding path program 1 times [2021-11-13 02:36:43,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:43,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099011268] [2021-11-13 02:36:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:43,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:43,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:43,619 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:43,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:37:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:01,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 3305 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:01,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:01,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:01,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:01,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099011268] [2021-11-13 02:37:01,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099011268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:01,889 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:01,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:37:01,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218752328] [2021-11-13 02:37:01,889 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:01,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:37:01,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:37:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:01,891 INFO L87 Difference]: Start difference. First operand 10251 states and 14686 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 02:37:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:03,678 INFO L93 Difference]: Finished difference Result 30489 states and 43653 transitions. [2021-11-13 02:37:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:37:03,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 67 [2021-11-13 02:37:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:03,798 INFO L225 Difference]: With dead ends: 30489 [2021-11-13 02:37:03,798 INFO L226 Difference]: Without dead ends: 20241 [2021-11-13 02:37:03,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:03,854 INFO L933 BasicCegarLoop]: 5153 mSDtfsCounter, 3809 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 713.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3809 SdHoareTripleChecker+Valid, 9062 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 830.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:03,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3809 Valid, 9062 Invalid, 8 Unknown, 0 Unchecked, 20.59ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 830.48ms Time] [2021-11-13 02:37:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20241 states. [2021-11-13 02:37:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20241 to 20207. [2021-11-13 02:37:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20207 states, 13650 states have (on average 1.34007326007326) internal successors, (18292), 14376 states have internal predecessors, (18292), 5240 states have call successors, (5240), 1318 states have call predecessors, (5240), 1316 states have return successors, (5400), 4953 states have call predecessors, (5400), 5220 states have call successors, (5400) [2021-11-13 02:37:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20207 states to 20207 states and 28932 transitions. [2021-11-13 02:37:05,257 INFO L78 Accepts]: Start accepts. Automaton has 20207 states and 28932 transitions. Word has length 67 [2021-11-13 02:37:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:05,258 INFO L470 AbstractCegarLoop]: Abstraction has 20207 states and 28932 transitions. [2021-11-13 02:37:05,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 02:37:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 20207 states and 28932 transitions. [2021-11-13 02:37:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 02:37:05,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:05,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:05,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:05,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:05,464 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:05,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 518998268, now seen corresponding path program 1 times [2021-11-13 02:37:05,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:05,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972724820] [2021-11-13 02:37:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:05,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:05,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:05,477 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:05,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:37:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:23,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 3474 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:23,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:37:24,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:37:24,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:24,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972724820] [2021-11-13 02:37:24,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972724820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:24,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:24,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:37:24,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461842905] [2021-11-13 02:37:24,651 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:24,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:37:24,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:37:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:24,652 INFO L87 Difference]: Start difference. First operand 20207 states and 28932 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:37:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:27,062 INFO L93 Difference]: Finished difference Result 60517 states and 86627 transitions. [2021-11-13 02:37:27,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:37:27,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 99 [2021-11-13 02:37:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:27,337 INFO L225 Difference]: With dead ends: 60517 [2021-11-13 02:37:27,337 INFO L226 Difference]: Without dead ends: 40257 [2021-11-13 02:37:27,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:27,445 INFO L933 BasicCegarLoop]: 5338 mSDtfsCounter, 3889 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 677.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3889 SdHoareTripleChecker+Valid, 9247 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.42ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 791.54ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:27,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3889 Valid, 9247 Invalid, 8 Unknown, 0 Unchecked, 16.42ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 791.54ms Time] [2021-11-13 02:37:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40257 states. [2021-11-13 02:37:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40257 to 40223. [2021-11-13 02:37:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40223 states, 27158 states have (on average 1.3392738787834155) internal successors, (36372), 28604 states have internal predecessors, (36372), 10444 states have call successors, (10444), 2630 states have call predecessors, (10444), 2620 states have return successors, (10764), 9865 states have call predecessors, (10764), 10404 states have call successors, (10764) [2021-11-13 02:37:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40223 states to 40223 states and 57580 transitions. [2021-11-13 02:37:30,674 INFO L78 Accepts]: Start accepts. Automaton has 40223 states and 57580 transitions. Word has length 99 [2021-11-13 02:37:30,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:30,674 INFO L470 AbstractCegarLoop]: Abstraction has 40223 states and 57580 transitions. [2021-11-13 02:37:30,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:37:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 40223 states and 57580 transitions. [2021-11-13 02:37:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 02:37:30,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:30,684 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:30,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:30,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:30,899 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:37:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1575766939, now seen corresponding path program 1 times [2021-11-13 02:37:30,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:30,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718124971] [2021-11-13 02:37:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:30,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:30,917 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:30,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:37:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:50,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 3460 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:37:50,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:37:51,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:37:51,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:51,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718124971] [2021-11-13 02:37:51,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718124971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:51,767 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:51,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:37:51,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877166058] [2021-11-13 02:37:51,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:51,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:37:51,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:37:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:37:51,769 INFO L87 Difference]: Start difference. First operand 40223 states and 57580 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:37:54,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:38:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:02,785 INFO L93 Difference]: Finished difference Result 113400 states and 159191 transitions. [2021-11-13 02:38:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:02,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 97 [2021-11-13 02:38:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:03,613 INFO L225 Difference]: With dead ends: 113400 [2021-11-13 02:38:03,615 INFO L226 Difference]: Without dead ends: 73084 [2021-11-13 02:38:03,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:03,824 INFO L933 BasicCegarLoop]: 5895 mSDtfsCounter, 5306 mSDsluCounter, 5639 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7076.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5306 SdHoareTripleChecker+Valid, 11534 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.99ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7618.86ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:03,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5306 Valid, 11534 Invalid, 768 Unknown, 0 Unchecked, 21.99ms Time], IncrementalHoareTripleChecker [7 Valid, 760 Invalid, 1 Unknown, 0 Unchecked, 7618.86ms Time] [2021-11-13 02:38:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73084 states. [2021-11-13 02:38:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73084 to 41235. [2021-11-13 02:38:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41235 states, 27667 states have (on average 1.3269960602884303) internal successors, (36714), 29142 states have internal predecessors, (36714), 9937 states have call successors, (9937), 3646 states have call predecessors, (9937), 3630 states have return successors, (9950), 9125 states have call predecessors, (9950), 9905 states have call successors, (9950) [2021-11-13 02:38:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41235 states to 41235 states and 56601 transitions. [2021-11-13 02:38:07,227 INFO L78 Accepts]: Start accepts. Automaton has 41235 states and 56601 transitions. Word has length 97 [2021-11-13 02:38:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:07,228 INFO L470 AbstractCegarLoop]: Abstraction has 41235 states and 56601 transitions. [2021-11-13 02:38:07,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:38:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 41235 states and 56601 transitions. [2021-11-13 02:38:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 02:38:07,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:07,241 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:07,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:07,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:07,463 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -191321111, now seen corresponding path program 1 times [2021-11-13 02:38:07,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:07,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596737681] [2021-11-13 02:38:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:07,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:07,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:07,476 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:07,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:38:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:26,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:38:26,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:38:27,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:38:27,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:27,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596737681] [2021-11-13 02:38:27,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596737681] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:27,860 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:27,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:38:27,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531764545] [2021-11-13 02:38:27,860 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:27,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:38:27,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:38:27,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:27,863 INFO L87 Difference]: Start difference. First operand 41235 states and 56601 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 02:38:31,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:31,299 INFO L93 Difference]: Finished difference Result 94618 states and 133788 transitions. [2021-11-13 02:38:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:31,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 165 [2021-11-13 02:38:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:31,731 INFO L225 Difference]: With dead ends: 94618 [2021-11-13 02:38:31,732 INFO L226 Difference]: Without dead ends: 53403 [2021-11-13 02:38:31,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:31,942 INFO L933 BasicCegarLoop]: 4177 mSDtfsCounter, 1160 mSDsluCounter, 8268 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 766.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 12445 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 833.06ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:31,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 12445 Invalid, 131 Unknown, 0 Unchecked, 17.11ms Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 833.06ms Time] [2021-11-13 02:38:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53403 states. [2021-11-13 02:38:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53403 to 41239. [2021-11-13 02:38:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41239 states, 27671 states have (on average 1.3270210689891944) internal successors, (36720), 29146 states have internal predecessors, (36720), 9937 states have call successors, (9937), 3646 states have call predecessors, (9937), 3630 states have return successors, (9950), 9125 states have call predecessors, (9950), 9905 states have call successors, (9950) [2021-11-13 02:38:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41239 states to 41239 states and 56607 transitions. [2021-11-13 02:38:35,107 INFO L78 Accepts]: Start accepts. Automaton has 41239 states and 56607 transitions. Word has length 165 [2021-11-13 02:38:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:35,108 INFO L470 AbstractCegarLoop]: Abstraction has 41239 states and 56607 transitions. [2021-11-13 02:38:35,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 02:38:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 41239 states and 56607 transitions. [2021-11-13 02:38:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 02:38:35,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:35,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:35,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-13 02:38:35,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:35,331 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash 235233387, now seen corresponding path program 1 times [2021-11-13 02:38:35,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:35,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115498032] [2021-11-13 02:38:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:35,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:35,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:35,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:38:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:54,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:38:54,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:38:55,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:38:56,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:56,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115498032] [2021-11-13 02:38:56,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115498032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:56,259 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:56,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:38:56,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071656020] [2021-11-13 02:38:56,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:56,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:38:56,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:38:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:56,261 INFO L87 Difference]: Start difference. First operand 41239 states and 56607 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:38:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:59,865 INFO L93 Difference]: Finished difference Result 88351 states and 123180 transitions. [2021-11-13 02:38:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:38:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 165 [2021-11-13 02:38:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:00,086 INFO L225 Difference]: With dead ends: 88351 [2021-11-13 02:39:00,086 INFO L226 Difference]: Without dead ends: 47130 [2021-11-13 02:39:00,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:39:00,408 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 503 mSDsluCounter, 8930 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 796.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 13442 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.44ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 862.88ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:00,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 13442 Invalid, 147 Unknown, 0 Unchecked, 17.44ms Time], IncrementalHoareTripleChecker [15 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 862.88ms Time] [2021-11-13 02:39:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47130 states. [2021-11-13 02:39:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47130 to 41241. [2021-11-13 02:39:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41241 states, 27673 states have (on average 1.3269612980161167) internal successors, (36721), 29148 states have internal predecessors, (36721), 9937 states have call successors, (9937), 3646 states have call predecessors, (9937), 3630 states have return successors, (9950), 9125 states have call predecessors, (9950), 9905 states have call successors, (9950) [2021-11-13 02:39:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41241 states to 41241 states and 56608 transitions. [2021-11-13 02:39:03,217 INFO L78 Accepts]: Start accepts. Automaton has 41241 states and 56608 transitions. Word has length 165 [2021-11-13 02:39:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:03,217 INFO L470 AbstractCegarLoop]: Abstraction has 41241 states and 56608 transitions. [2021-11-13 02:39:03,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:39:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 41241 states and 56608 transitions. [2021-11-13 02:39:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 02:39:03,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:03,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:03,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:03,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:03,451 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1100523611, now seen corresponding path program 1 times [2021-11-13 02:39:03,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:03,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181351107] [2021-11-13 02:39:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:03,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:03,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:03,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:39:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:22,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 3719 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 02:39:22,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:39:24,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 02:39:27,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:27,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181351107] [2021-11-13 02:39:27,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181351107] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:27,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:39:27,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-13 02:39:27,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232278090] [2021-11-13 02:39:27,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:27,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:39:27,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:27,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:39:27,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:39:27,904 INFO L87 Difference]: Start difference. First operand 41241 states and 56608 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:39:33,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:35,998 INFO L93 Difference]: Finished difference Result 83178 states and 114038 transitions. [2021-11-13 02:39:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 02:39:35,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) Word has length 180 [2021-11-13 02:39:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:36,170 INFO L225 Difference]: With dead ends: 83178 [2021-11-13 02:39:36,170 INFO L226 Difference]: Without dead ends: 41954 [2021-11-13 02:39:36,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:39:36,275 INFO L933 BasicCegarLoop]: 4018 mSDtfsCounter, 395 mSDsluCounter, 32020 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4731.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 36038 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.11ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4881.92ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:36,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 36038 Invalid, 73 Unknown, 0 Unchecked, 101.11ms Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 4881.92ms Time] [2021-11-13 02:39:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41954 states. [2021-11-13 02:39:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41954 to 41604. [2021-11-13 02:39:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41604 states, 27916 states have (on average 1.3252973205330276) internal successors, (36997), 29398 states have internal predecessors, (36997), 10011 states have call successors, (10011), 3683 states have call predecessors, (10011), 3676 states have return successors, (10063), 9204 states have call predecessors, (10063), 9979 states have call successors, (10063) [2021-11-13 02:39:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41604 states to 41604 states and 57071 transitions. [2021-11-13 02:39:39,068 INFO L78 Accepts]: Start accepts. Automaton has 41604 states and 57071 transitions. Word has length 180 [2021-11-13 02:39:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:39,069 INFO L470 AbstractCegarLoop]: Abstraction has 41604 states and 57071 transitions. [2021-11-13 02:39:39,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 7 states have internal predecessors, (127), 2 states have call successors, (25), 2 states have call predecessors, (25), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:39:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 41604 states and 57071 transitions. [2021-11-13 02:39:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 02:39:39,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:39,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:39,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 02:39:39,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:39,296 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1643663692, now seen corresponding path program 1 times [2021-11-13 02:39:39,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:39,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238159338] [2021-11-13 02:39:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:39,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:39,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:39,310 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:39,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:39:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:58,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 3734 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:39:58,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:39:59,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:40:00,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:00,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238159338] [2021-11-13 02:40:00,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238159338] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:00,219 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:00,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:00,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368133161] [2021-11-13 02:40:00,219 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:00,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:00,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:00,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:00,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:00,221 INFO L87 Difference]: Start difference. First operand 41604 states and 57071 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:40:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:02,483 INFO L93 Difference]: Finished difference Result 83166 states and 114329 transitions. [2021-11-13 02:40:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 183 [2021-11-13 02:40:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:02,671 INFO L225 Difference]: With dead ends: 83166 [2021-11-13 02:40:02,671 INFO L226 Difference]: Without dead ends: 41860 [2021-11-13 02:40:02,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:02,801 INFO L933 BasicCegarLoop]: 3917 mSDtfsCounter, 12 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7828 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.08ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.93ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:02,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 7828 Invalid, 14 Unknown, 0 Unchecked, 9.08ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 136.93ms Time] [2021-11-13 02:40:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41860 states. [2021-11-13 02:40:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41860 to 41860. [2021-11-13 02:40:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41860 states, 28108 states have (on average 1.3230752810587734) internal successors, (37189), 29590 states have internal predecessors, (37189), 10075 states have call successors, (10075), 3683 states have call predecessors, (10075), 3676 states have return successors, (10127), 9268 states have call predecessors, (10127), 10043 states have call successors, (10127) [2021-11-13 02:40:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41860 states to 41860 states and 57391 transitions. [2021-11-13 02:40:05,057 INFO L78 Accepts]: Start accepts. Automaton has 41860 states and 57391 transitions. Word has length 183 [2021-11-13 02:40:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:05,057 INFO L470 AbstractCegarLoop]: Abstraction has 41860 states and 57391 transitions. [2021-11-13 02:40:05,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:40:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 41860 states and 57391 transitions. [2021-11-13 02:40:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 02:40:05,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:05,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:05,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-13 02:40:05,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:05,279 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1255886710, now seen corresponding path program 1 times [2021-11-13 02:40:05,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:05,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56283881] [2021-11-13 02:40:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:05,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:05,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:05,292 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:05,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 02:40:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:24,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 3716 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:24,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:40:25,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:40:26,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:26,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56283881] [2021-11-13 02:40:26,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56283881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:26,087 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:26,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:26,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328166459] [2021-11-13 02:40:26,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:26,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:26,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:26,089 INFO L87 Difference]: Start difference. First operand 41860 states and 57391 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:40:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:27,929 INFO L93 Difference]: Finished difference Result 83678 states and 114997 transitions. [2021-11-13 02:40:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 183 [2021-11-13 02:40:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:28,066 INFO L225 Difference]: With dead ends: 83678 [2021-11-13 02:40:28,066 INFO L226 Difference]: Without dead ends: 42116 [2021-11-13 02:40:28,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:28,161 INFO L933 BasicCegarLoop]: 3915 mSDtfsCounter, 8 mSDsluCounter, 7825 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11740 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.71ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:28,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11740 Invalid, 11 Unknown, 0 Unchecked, 11.00ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 70.71ms Time] [2021-11-13 02:40:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42116 states. [2021-11-13 02:40:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42116 to 41988. [2021-11-13 02:40:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41988 states, 28236 states have (on average 1.322744014732965) internal successors, (37349), 29718 states have internal predecessors, (37349), 10075 states have call successors, (10075), 3683 states have call predecessors, (10075), 3676 states have return successors, (10127), 9268 states have call predecessors, (10127), 10043 states have call successors, (10127) [2021-11-13 02:40:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41988 states to 41988 states and 57551 transitions. [2021-11-13 02:40:30,595 INFO L78 Accepts]: Start accepts. Automaton has 41988 states and 57551 transitions. Word has length 183 [2021-11-13 02:40:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:30,596 INFO L470 AbstractCegarLoop]: Abstraction has 41988 states and 57551 transitions. [2021-11-13 02:40:30,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:40:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 41988 states and 57551 transitions. [2021-11-13 02:40:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-13 02:40:30,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:30,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:30,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:30,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:30,831 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash 29538271, now seen corresponding path program 1 times [2021-11-13 02:40:30,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:30,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532121882] [2021-11-13 02:40:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:30,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:30,842 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:30,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:40:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:49,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 3720 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:40:49,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:40:50,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:40:52,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:52,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532121882] [2021-11-13 02:40:52,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532121882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:52,482 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:52,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-13 02:40:52,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190937283] [2021-11-13 02:40:52,482 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:52,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 02:40:52,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 02:40:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:40:52,485 INFO L87 Difference]: Start difference. First operand 41988 states and 57551 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 2 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 02:40:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:56,363 INFO L93 Difference]: Finished difference Result 89772 states and 125000 transitions. [2021-11-13 02:40:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:40:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 2 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) Word has length 184 [2021-11-13 02:40:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:56,544 INFO L225 Difference]: With dead ends: 89772 [2021-11-13 02:40:56,545 INFO L226 Difference]: Without dead ends: 48079 [2021-11-13 02:40:56,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:40:56,652 INFO L933 BasicCegarLoop]: 4529 mSDtfsCounter, 506 mSDsluCounter, 44585 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1221.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 49114 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.24ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1306.99ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:56,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 49114 Invalid, 259 Unknown, 0 Unchecked, 42.24ms Time], IncrementalHoareTripleChecker [18 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1306.99ms Time] [2021-11-13 02:40:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48079 states. [2021-11-13 02:40:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48079 to 42001. [2021-11-13 02:40:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42001 states, 28245 states have (on average 1.3226411754292795) internal successors, (37358), 29728 states have internal predecessors, (37358), 10075 states have call successors, (10075), 3683 states have call predecessors, (10075), 3680 states have return successors, (10132), 9271 states have call predecessors, (10132), 10043 states have call successors, (10132) [2021-11-13 02:40:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42001 states to 42001 states and 57565 transitions. [2021-11-13 02:40:59,280 INFO L78 Accepts]: Start accepts. Automaton has 42001 states and 57565 transitions. Word has length 184 [2021-11-13 02:40:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:59,280 INFO L470 AbstractCegarLoop]: Abstraction has 42001 states and 57565 transitions. [2021-11-13 02:40:59,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 2 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 02:40:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 42001 states and 57565 transitions. [2021-11-13 02:40:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-13 02:40:59,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:59,287 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:59,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:59,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:59,512 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash 239878134, now seen corresponding path program 1 times [2021-11-13 02:40:59,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:59,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770047450] [2021-11-13 02:40:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:59,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:59,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:59,524 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:59,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 02:41:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:17,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 3728 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:41:17,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:41:18,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:41:19,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:19,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770047450] [2021-11-13 02:41:19,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770047450] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:41:19,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [250767293] [2021-11-13 02:41:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:19,450 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:41:19,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:41:19,452 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:41:19,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-13 02:41:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:23,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 3728 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:41:23,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:41:24,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:41:24,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [250767293] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:41:24,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:41:24,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 3] total 9 [2021-11-13 02:41:24,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399556085] [2021-11-13 02:41:24,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:24,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:24,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:41:24,981 INFO L87 Difference]: Start difference. First operand 42001 states and 57565 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:41:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:27,186 INFO L93 Difference]: Finished difference Result 83730 states and 114957 transitions. [2021-11-13 02:41:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:27,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 189 [2021-11-13 02:41:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:27,348 INFO L225 Difference]: With dead ends: 83730 [2021-11-13 02:41:27,348 INFO L226 Difference]: Without dead ends: 42027 [2021-11-13 02:41:27,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:41:27,455 INFO L933 BasicCegarLoop]: 3913 mSDtfsCounter, 0 mSDsluCounter, 3906 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7819 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.36ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.95ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:27,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7819 Invalid, 14 Unknown, 0 Unchecked, 10.36ms Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 45.95ms Time] [2021-11-13 02:41:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42027 states. [2021-11-13 02:41:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42027 to 42001. [2021-11-13 02:41:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42001 states, 28245 states have (on average 1.3198796247123386) internal successors, (37280), 29728 states have internal predecessors, (37280), 10075 states have call successors, (10075), 3683 states have call predecessors, (10075), 3680 states have return successors, (10132), 9271 states have call predecessors, (10132), 10043 states have call successors, (10132) [2021-11-13 02:41:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42001 states to 42001 states and 57487 transitions. [2021-11-13 02:41:30,063 INFO L78 Accepts]: Start accepts. Automaton has 42001 states and 57487 transitions. Word has length 189 [2021-11-13 02:41:30,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:30,064 INFO L470 AbstractCegarLoop]: Abstraction has 42001 states and 57487 transitions. [2021-11-13 02:41:30,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:41:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 42001 states and 57487 transitions. [2021-11-13 02:41:30,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-13 02:41:30,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:30,070 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:30,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:30,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:30,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:41:30,483 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash -437531846, now seen corresponding path program 1 times [2021-11-13 02:41:30,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:30,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541268459] [2021-11-13 02:41:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:30,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:30,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:30,503 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:30,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 02:41:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:49,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 3740 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:41:49,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:41:50,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:41:51,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:51,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541268459] [2021-11-13 02:41:51,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541268459] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:41:51,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1501226662] [2021-11-13 02:41:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:51,721 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:41:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:41:51,727 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:41:51,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-13 02:41:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:56,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 3740 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:41:56,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:41:56,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 02:41:57,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1501226662] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:57,395 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:41:57,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-13 02:41:57,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685435238] [2021-11-13 02:41:57,396 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:57,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:57,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:41:57,398 INFO L87 Difference]: Start difference. First operand 42001 states and 57487 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:41:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:59,375 INFO L93 Difference]: Finished difference Result 83662 states and 114526 transitions. [2021-11-13 02:41:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:59,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 195 [2021-11-13 02:41:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:59,525 INFO L225 Difference]: With dead ends: 83662 [2021-11-13 02:41:59,526 INFO L226 Difference]: Without dead ends: 41959 [2021-11-13 02:41:59,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:41:59,632 INFO L933 BasicCegarLoop]: 3873 mSDtfsCounter, 0 mSDsluCounter, 3866 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7739 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.68ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:59,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7739 Invalid, 14 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 44.68ms Time] [2021-11-13 02:41:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41959 states. [2021-11-13 02:42:01,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41959 to 41959. [2021-11-13 02:42:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41959 states, 28203 states have (on average 1.3190795305463958) internal successors, (37202), 29686 states have internal predecessors, (37202), 10075 states have call successors, (10075), 3683 states have call predecessors, (10075), 3680 states have return successors, (10132), 9271 states have call predecessors, (10132), 10043 states have call successors, (10132) [2021-11-13 02:42:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41959 states to 41959 states and 57409 transitions. [2021-11-13 02:42:02,074 INFO L78 Accepts]: Start accepts. Automaton has 41959 states and 57409 transitions. Word has length 195 [2021-11-13 02:42:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:02,075 INFO L470 AbstractCegarLoop]: Abstraction has 41959 states and 57409 transitions. [2021-11-13 02:42:02,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:42:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 41959 states and 57409 transitions. [2021-11-13 02:42:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-13 02:42:02,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:02,081 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:02,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-13 02:42:02,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:02,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:42:02,482 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:42:02,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1214828176, now seen corresponding path program 1 times [2021-11-13 02:42:02,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:02,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161778573] [2021-11-13 02:42:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:02,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:02,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:02,492 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:02,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 02:42:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:21,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 3745 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:42:21,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:42:22,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:42:23,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:23,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161778573] [2021-11-13 02:42:23,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161778573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:42:23,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1509721029] [2021-11-13 02:42:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:23,923 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:23,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:42:23,931 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:42:23,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-13 02:42:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:28,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 3745 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:42:28,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:42:29,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 02:42:29,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1509721029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:29,780 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:42:29,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-13 02:42:29,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706092005] [2021-11-13 02:42:29,780 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:29,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:42:29,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:42:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:42:29,782 INFO L87 Difference]: Start difference. First operand 41959 states and 57409 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:42:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:31,882 INFO L93 Difference]: Finished difference Result 83635 states and 114464 transitions. [2021-11-13 02:42:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:42:31,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 197 [2021-11-13 02:42:31,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:32,040 INFO L225 Difference]: With dead ends: 83635 [2021-11-13 02:42:32,040 INFO L226 Difference]: Without dead ends: 41974 [2021-11-13 02:42:32,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:42:32,124 INFO L933 BasicCegarLoop]: 3959 mSDtfsCounter, 551 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:32,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 7246 Invalid, 5 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 51.38ms Time] [2021-11-13 02:42:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41974 states. [2021-11-13 02:42:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41974 to 41953. [2021-11-13 02:42:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41953 states, 28197 states have (on average 1.3190055679682235) internal successors, (37192), 29680 states have internal predecessors, (37192), 10075 states have call successors, (10075), 3683 states have call predecessors, (10075), 3680 states have return successors, (10132), 9271 states have call predecessors, (10132), 10043 states have call successors, (10132) [2021-11-13 02:42:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41953 states to 41953 states and 57399 transitions. [2021-11-13 02:42:34,476 INFO L78 Accepts]: Start accepts. Automaton has 41953 states and 57399 transitions. Word has length 197 [2021-11-13 02:42:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:34,476 INFO L470 AbstractCegarLoop]: Abstraction has 41953 states and 57399 transitions. [2021-11-13 02:42:34,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:42:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 41953 states and 57399 transitions. [2021-11-13 02:42:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-13 02:42:34,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:34,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:34,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:34,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:34,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:34,894 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:42:34,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1600764808, now seen corresponding path program 1 times [2021-11-13 02:42:34,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:34,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796393441] [2021-11-13 02:42:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:34,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:34,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:34,905 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:34,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 02:42:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:54,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 3744 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:42:54,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:42:55,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:42:56,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:56,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796393441] [2021-11-13 02:42:56,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796393441] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:42:56,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1834792577] [2021-11-13 02:42:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:56,728 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:56,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:42:56,728 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:42:56,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 02:43:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:00,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 3744 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:00,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 02:43:01,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 02:43:02,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1834792577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:02,176 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:43:02,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-13 02:43:02,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794431256] [2021-11-13 02:43:02,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:02,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:43:02,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:02,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:43:02,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:43:02,235 INFO L87 Difference]: Start difference. First operand 41953 states and 57399 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:43:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:04,722 INFO L93 Difference]: Finished difference Result 83610 states and 114424 transitions. [2021-11-13 02:43:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:43:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 197 [2021-11-13 02:43:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:05,029 INFO L225 Difference]: With dead ends: 83610 [2021-11-13 02:43:05,029 INFO L226 Difference]: Without dead ends: 41955 [2021-11-13 02:43:05,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:43:05,187 INFO L933 BasicCegarLoop]: 3866 mSDtfsCounter, 0 mSDsluCounter, 3858 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7724 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.16ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:05,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7724 Invalid, 15 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 48.16ms Time] [2021-11-13 02:43:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41955 states. [2021-11-13 02:43:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41955 to 41953. [2021-11-13 02:43:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41953 states, 28197 states have (on average 1.3187927793736922) internal successors, (37186), 29680 states have internal predecessors, (37186), 10075 states have call successors, (10075), 3683 states have call predecessors, (10075), 3680 states have return successors, (10132), 9271 states have call predecessors, (10132), 10043 states have call successors, (10132) [2021-11-13 02:43:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41953 states to 41953 states and 57393 transitions. [2021-11-13 02:43:08,185 INFO L78 Accepts]: Start accepts. Automaton has 41953 states and 57393 transitions. Word has length 197 [2021-11-13 02:43:08,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:08,185 INFO L470 AbstractCegarLoop]: Abstraction has 41953 states and 57393 transitions. [2021-11-13 02:43:08,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:43:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 41953 states and 57393 transitions. [2021-11-13 02:43:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-13 02:43:08,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:08,189 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:08,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-13 02:43:08,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2021-11-13 02:43:08,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:08,590 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:08,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1591843395, now seen corresponding path program 1 times [2021-11-13 02:43:08,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:08,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871519845] [2021-11-13 02:43:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:08,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:08,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:08,604 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:08,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 02:43:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:29,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 3748 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:43:29,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:43:30,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:43:31,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:31,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871519845] [2021-11-13 02:43:31,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871519845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:31,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925186420] [2021-11-13 02:43:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:31,412 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:43:31,412 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:43:31,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-13 02:43:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:36,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 3748 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:43:36,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 02:43:37,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 02:43:38,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925186420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:38,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:43:38,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 13 [2021-11-13 02:43:38,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757294646] [2021-11-13 02:43:38,348 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:38,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:43:38,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:43:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:43:38,349 INFO L87 Difference]: Start difference. First operand 41953 states and 57393 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-13 02:43:40,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:43:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:46,025 INFO L93 Difference]: Finished difference Result 83722 states and 114660 transitions. [2021-11-13 02:43:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:43:46,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) Word has length 199 [2021-11-13 02:43:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:46,264 INFO L225 Difference]: With dead ends: 83722 [2021-11-13 02:43:46,264 INFO L226 Difference]: Without dead ends: 42067 [2021-11-13 02:43:46,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:43:46,374 INFO L933 BasicCegarLoop]: 3870 mSDtfsCounter, 32 mSDsluCounter, 19329 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4947.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 23199 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.42ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5118.13ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:46,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 23199 Invalid, 59 Unknown, 0 Unchecked, 22.42ms Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 5118.13ms Time] [2021-11-13 02:43:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42067 states. [2021-11-13 02:43:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42067 to 41979. [2021-11-13 02:43:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41979 states, 28217 states have (on average 1.318637700676897) internal successors, (37208), 29700 states have internal predecessors, (37208), 10079 states have call successors, (10079), 3683 states have call predecessors, (10079), 3682 states have return successors, (10138), 9277 states have call predecessors, (10138), 10047 states have call successors, (10138) [2021-11-13 02:43:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41979 states to 41979 states and 57425 transitions. [2021-11-13 02:43:48,978 INFO L78 Accepts]: Start accepts. Automaton has 41979 states and 57425 transitions. Word has length 199 [2021-11-13 02:43:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:48,979 INFO L470 AbstractCegarLoop]: Abstraction has 41979 states and 57425 transitions. [2021-11-13 02:43:48,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-13 02:43:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 41979 states and 57425 transitions. [2021-11-13 02:43:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-13 02:43:48,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:48,984 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:49,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:49,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-13 02:43:49,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:49,385 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash -752809733, now seen corresponding path program 1 times [2021-11-13 02:43:49,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:49,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741862941] [2021-11-13 02:43:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:49,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:49,396 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:49,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 02:44:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:10,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 3745 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:44:10,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:44:11,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:44:13,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:13,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741862941] [2021-11-13 02:44:13,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741862941] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:13,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [33786063] [2021-11-13 02:44:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:13,047 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:13,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:44:13,049 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:44:13,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-13 02:44:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:17,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 3745 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:44:17,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 02:44:18,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 02:44:19,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [33786063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:19,091 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:44:19,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-13 02:44:19,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538745129] [2021-11-13 02:44:19,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:19,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:44:19,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:44:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:44:19,093 INFO L87 Difference]: Start difference. First operand 41979 states and 57425 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 02:44:21,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:44:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:23,780 INFO L93 Difference]: Finished difference Result 41981 states and 57426 transitions. [2021-11-13 02:44:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:44:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 199 [2021-11-13 02:44:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:23,984 INFO L225 Difference]: With dead ends: 41981 [2021-11-13 02:44:23,984 INFO L226 Difference]: Without dead ends: 40752 [2021-11-13 02:44:24,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:44:24,012 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 100 mSDsluCounter, 3800 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2871.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 7698 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3021.01ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:24,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 7698 Invalid, 6 Unknown, 0 Unchecked, 9.52ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 3021.01ms Time] [2021-11-13 02:44:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40752 states. [2021-11-13 02:44:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40752 to 32155. [2021-11-13 02:44:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32155 states, 21612 states have (on average 1.316537109013511) internal successors, (28453), 22743 states have internal predecessors, (28453), 7737 states have call successors, (7737), 2794 states have call predecessors, (7737), 2805 states have return successors, (7819), 7145 states have call predecessors, (7819), 7730 states have call successors, (7819) [2021-11-13 02:44:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32155 states to 32155 states and 44009 transitions. [2021-11-13 02:44:26,204 INFO L78 Accepts]: Start accepts. Automaton has 32155 states and 44009 transitions. Word has length 199 [2021-11-13 02:44:26,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:26,205 INFO L470 AbstractCegarLoop]: Abstraction has 32155 states and 44009 transitions. [2021-11-13 02:44:26,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 02:44:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 32155 states and 44009 transitions. [2021-11-13 02:44:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-13 02:44:26,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:26,251 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:26,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-13 02:44:26,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:26,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:26,652 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:26,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:26,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1842956755, now seen corresponding path program 1 times [2021-11-13 02:44:26,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:44:26,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551950277] [2021-11-13 02:44:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:26,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:44:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:44:26,664 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:44:26,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 02:44:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:47,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 4328 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:44:47,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-13 02:44:49,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 02:44:50,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:50,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551950277] [2021-11-13 02:44:50,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551950277] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:50,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1332374484] [2021-11-13 02:44:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:50,852 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:50,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:44:50,853 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:44:50,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_784b242c-e715-4e96-b4f0-08267cd1411e/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-13 02:44:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 4328 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:55,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-13 02:44:57,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-13 02:44:58,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1332374484] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:58,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:44:58,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 3] total 9 [2021-11-13 02:44:58,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20425488] [2021-11-13 02:44:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:58,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:44:58,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:44:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:44:58,525 INFO L87 Difference]: Start difference. First operand 32155 states and 44009 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 02:45:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:00,215 INFO L93 Difference]: Finished difference Result 64014 states and 87646 transitions. [2021-11-13 02:45:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:45:00,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 336 [2021-11-13 02:45:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:00,585 INFO L225 Difference]: With dead ends: 64014 [2021-11-13 02:45:00,585 INFO L226 Difference]: Without dead ends: 32157 [2021-11-13 02:45:00,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:45:00,688 INFO L933 BasicCegarLoop]: 3865 mSDtfsCounter, 0 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7725 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.17ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:00,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7725 Invalid, 6 Unknown, 0 Unchecked, 9.44ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 78.17ms Time] [2021-11-13 02:45:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32157 states.